8x-9y=7 2x-3y=-5 elimination method
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Step-by-step explanation:
let take 8x-9y=7 to be eq---(i)
and 2x-3y=-5-------(ii)
Now, Multiplying 1 in eq(i) and 4 in eq (ii) we get,
8x-9y=7 --(iii) and 8x-12y=-20---(iv)
(ii)-(i)=8x-12y-8x+9y=-20-7
= -3y= -27
= y = -27/-3
y=9
putting the value of y in eq (ii) we get
2x-3*9=-5
2x-27=-5
2x= 22
x=11
Hence x=11 and y=9
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